that actually happened to me once. i had stock electric and charging system in my car. i had an amp hooked up it was only 820 watt but pretty much all of that 820 was being drawn. at first it didnt give me any trouble but once i went to start my car i turned the switch on for the amp and my car cut off and wouldnt start back up while the switch was on. im not real sure why it did that i guessed my battery was a little low or it was just too much of a load for my charging system. but that doesnt make much sense because thats the only time that happened. had no more issues like that afterwards.
